Luxfer - are these scuba tanks?

[SquigglesNZ]

Bought a couple of Fabers and the seller gave me two of these 5.25L tanks (sans valves) as well that they had sitting around for a few years. I haven't been able to identify them beyond the Lux UK stamp so hoping to get help with decoding this and confirming if they are indeed scuba tanks.

 

[rhwestfall]

I'm thinking not....

 

[davecampbell]

looks to be 3.5 kg CO2 fire extinguisher cylinders...

 

[happy-diver]

are

or can

 

[rjack321]

They are 132bar working pressure and 5.25L.... So about 693L or 24cf. With thin walls (due to their low working pressure) and light-ish weight they are going to be buoyant lil sheets - assuming you even try to dive them as a pony bottle or something. Otherwise they are not scuba cylinders

 

[broncobowsher]

Those are CO2 tanks. As others mentioned, could be used with air but not a good choice. Depending on your local industrial gas supplier you might be able to trade those in for something more usable, like oxygen.

I don't know the Australian gas supplier industry and local scuba tank laws/local practices.

 

[happy-diver]

Well if you wanted to use them as back mounted bottles with a chest mount rebreather or something

you could give them a flush then fill them yourself


As per the Australian Local Practices, at my house;


We used to use them as a lesser than stage bottle across the stomach


Now I use one as a portability high pressure blowing device especially

With this

 

[Edward3c]

BS 5045-8​

Transportable gas containers-Specification for seamless aluminium alloy gas containers of water capacity 0.5 L up to 15 L and up to 300 bar charged pressure at 15°C for special portable application​

 

[rjack321]

BS 5045-8​

Transportable gas containers-Specification for seamless aluminium alloy gas containers of water capacity 0.5 L up to 15 L and up to 300 bar charged pressure at 15°C for special portable application​

Not sure why you posted this since that specification applies to a whole range of cylinders? In this case, their TEST (TP) pressure is 220bar, which makes their working pressure about 130/132bar. (test = 5/3rds working). They are definitely not 300bar cylinders and will almost for sure rupture at those pressures.

 

[happy-diver]

Well open my blind eyes and make them round yeah I missed TP

anyhow one of my EX Co2 bottles is now an emergency O2 aluminium bottle d size about 165 WP
and another tall I think E aluminium bottle EX beer gas is that the same, is now my helium storage

not that I have any helium